.call{
  width: 65%;
  height: 65%;
  position: relative;
}
.callImg{
  width: 100%;height: 100%;position: absolute;top: 0px;left: 0px;z-index: 0;display: flex;justify-content: center;align-items: center;
  .iconfont{font-size: 40px;color: #333;}
}
.callBtn{
    width: 100%;
    height: 100%;
    border-radius: 100px;
    position: absolute;
    top: 0px;
    left: 0px;
    opacity: 0;
    z-index: 1;
}